相あいなるべくは

expression

if it is possible

Polite, formal expression used to preface a request or suggestion, equivalent to できれば or 可能であれば but more literary and humble. Often seen in business or official contexts.

• 相あいなるべくは、来らい週しゅうの会かい議ぎにご出しゅっ席せきいただければ幸さいわいです。

  If it is possible, I would appreciate it if you could attend next week's meeting.

• 相あいなるべくは、早はやめにご返へん信しんいただけますと助たすかります。

  If possible, I would be grateful if you could reply early.